Foundry
Many dust collection applications create different requirements. The control of sand in a sand casting foundry is essential, or levels could exceed recommended exposure limits for silica dust. Shot blasting machines have their own dust collection needs, including separation of dust from the blasting material. Cutting, grinding, and sanding produce metal dust that may contain hazardous materials.
Metal casting foundries require dust and fume collection for many processes. Foundry dust collection may involve special challenges, like high temperatures and a heavy dust load. Also, foundries often have both sand and metal dust to deal with.
In the typical foundry process, molds are made of sand or another material. Metal is poured into these molds. After cooling and breaking the mold, the foundry reclaims the sand. Cast parts need to be degated, removing excess pieces of metal from the casting. The parts also require finishing with blasting, grinding, or sanding.
Processes that will produce problem dust and fumes
● Sand transport and mixing
● Mold production
● Shakeout of cooled parts
● Reclaiming used sand
● Cutting
● Shot blasting
● Grinding or sanding
Equipment Selection
● Cyclone
● Chemical isolation system
● Spark trap
● Rhino Drum
● Abort Gate
● Explosion Venting
● Explosion Isolation Valve
● Airlock
● Fume arms
● Hoods
● Downdraft tables
